NHRA allows Alum heads in stock/ss

[Rory McNeil]

I`m not sure if all the Edelbrock heads have no exhaust crossover passage or not, but I know many do. Yet with a factory head, you are not allowed to plug the crossover into the bowl area. Also, I`m pretty sure that not all the new heads approved use the same combustion chamber volume or valve sizes for every application that they are approved for. Interesting, eh?

[Tim Ellis]

I wish the Performer rpm heads were ok'd for stock too, especially for my 89 5.0l

[Bill Harris]

Like the Olds head, the Edelbrock is only specified for SS for the 429 CJ Ford motor (at a 10 HP premium), of which there has been exactly one built in the last 20 years, and it hasn't been run in two years. The stocker still has to run the OEM unobtainium version. And there are those who are bitching about the lack of Chevy heads... don't make me laugh...

[Sam Murray]

Originally Posted by Wade_Owens

So, port shape, location, valve size, chamber size and shape, guide diameter, shape and height, etc, are all EXACTLY the same as stock? Outside of aluminum saving some nose weight, why did Edelbrock go to all the trouble?

WTF!!!!!!!!!!!

Where did this B_ _ L S_ _ T come from????????? First roller rockers and now this! I'm beginning to think the manufacturers are winding up NHRA, the whiners and the cry babies! Just what we need in this economy more unneeded expense.
I'm sure Farmer is rolling over in his grave?

[Tim Ellis]

How is it an unneeded expense? You don't have to run them, AND in my case in Superstock (if I ran superstock, not stock)it would be Cheaper to buy a set rather than have a set built. I just checked all years of smallblock Ford included (64-81) and can't find a single year or model the Edelbrocks are allowed in Stock, SS only. Others have Stock availability, such as 352, 390, 428, from what I can see.

[Hudlow66]

Originally Posted by Chris DeGidio

The Edelbrock 383-440 Mopar heads are the same as the Mopar "452"aluminum heads Mopar sells thru MP.They are made for Mopar by Edelbrock,and are legal for S/S.The 2012 Flyer has a part number and says they are legal heads.The Edelbrock heads typically are cheaper price wise than the Mopar 452 aluminum heads.

The Eddy and 452 Mopar heads have 2.14 I and 1.81 E valves whereas the OEM iron head are 2.08 I and 1.74 E.

Neither one of these heads would work for somebody running a '66 383 combo, would they? 2.08 in. but the little 1.60 ex. (like the early "915")

[Dean3870]

JOKE!!! just call it jr. comp
mike dean
3870

[Jim Wahl]

Edelbrock #

60107 - 67-73 AMC 343-401

60037 - 67-69 Buick 400-455

61767 - 92-30 Dodge 318-360.......< This is a misprint! I think they mean 92-03 Magnum engines and not the earlier LA engines?

60217 - 64-81 Ford 289-351

60697 - 69-78 Ford 429-460

61657 - 70-71 Ford 429CJ


.

[Chris DeGidio]

Originally Posted by Hudlow66

Neither one of these heads would work for somebody running a '66 383 combo, would they? 2.08 in. but the little 1.60 ex. (like the early "915")

If the Mopar 452 head is listed in the engine guide for the 1966 383 S/S combo,then it is legal.

[X-TECH MAN]

Just think of the good part.....When NHRA/IHRA trashes stock you will be all set to run the 10.90 class or maybe 9.90's if you junk is quick enough.